lib/cartesian_iterator.rb in Cartesian-0.2.3 vs lib/cartesian_iterator.rb in Cartesian-0.3.0

@@ -1,15 +1,20 @@
-class CartesianIterator
+require 'grid_search'
+
+class CartesianIterator
+
+  include GridSearch
+
   def initialize(foo, bar)
     @lists = []
     @tot_iter = 1
     x(foo)
     x(bar)
   end
 
   def x(other)
-    @lists << other.to_a
+    @lists << other.to_a.dup
     @tot_iter *= @lists[-1].size
     self
   end
 
   def each
@@ -39,10 +44,11 @@
 
   def to_a
     array = []
     self.each {|*element| array << element }
     array
-  end
+  end
+
 end
 
 module Iterable
   def start
     @next_index = -1